871845066 has 32 divisors (see below), whose sum is σ = 1938499200. Its totient is φ = 290455200.

The previous prime is 871845049. The next prime is 871845089. The reversal of 871845066 is 660548178.

It is a happy number.

It is a super-2 number, since 2×871845066² = 1520227638217088712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134590 + ... + 140918.

It is an arithmetic number, because the mean of its divisors is an integer number (60578100).

Almost surely, 2^871845066 is an apocalyptic number.

871845066 is an abundant number, since it is smaller than the sum of its proper divisors (1066654134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871845066 is a wasteful number, since it uses less digits than its factorization.

871845066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8891 (or 8885 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 871845066 is about 29527.0226402866. The cubic root of 871845066 is about 955.3146504828.

The spelling of 871845066 in words is "eight hundred seventy-one million, eight hundred forty-five thousand, sixty-six".